Real Madrid defender Antonio Rudiger, who could face a lengthy ban after appearing to throw an object towards the referee in a fit of anger during the Copa del Rey final on Sunday, apologised for his behaviour.
Antonio Rudiger had complained that he was subjected to monkey chants during the game won 2-1 by Chelsea at the Tottenham Hotspur Stadium.
Tottenham launched an appeal but the FA upheld his red card, meaning Son will now serve a three-game ban.
Chelsea's 100 per cent record in the Premier League came to an end on Sunday.
Spirits are high in the Chelsea camp following Maurizio Sarri's arrival as they prepare for Sunday's Community Shield clash.
It seems Rudiger's time at Stamford Bridge has seen him pick up a few tricks.
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